$ query “AS45903” --type=asn → 1 result(s)
AS45903 — CMCTELECOM-VN
CMC Telecom Infrastructure Company
AS45903 is a major transit provider registered to CMC Telecom Infrastructure Company, established in Vietnam. The network announces a respectable 84 992 IPv4 addresses. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #7 in Vietnam — Top 10 by reach within country
Basic Information
- Country
- 🇻🇳 Vietnam
- Category
- Internet Service Provider
- Network Role
- Major Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- March 04, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 347 / 35
- IPv6 Prefixes (raw / aggregated)
- 140 / 2
- IPv4 Addresses
- 84 992
- Largest IPv4 Prefix
- /18 (16 384 addresses)
- Largest IPv6 Prefix
- /34
- Geolocated Countries
- 🇻🇳 VN (51 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 9 flagged IPs out of 84 992 total (0.01%)
- Open Proxies
- 3 known open proxies in this network
Connectivity Summary
- Upstream Providers
- 15 upstream autonomous systems providing transit
- Peers
- 183 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 96 downstream autonomous systems buying transit
- Degree
- 302 unique BGP neighbors (providers + customers + peers)
- Reach
- 284 — customer cone size measuring network influence
- Degree Rank
- #436
- Reach Rank
- #765
- Country Rank
- #7
Upstream Providers (15)
Prefix Lists
IPv4 Prefixes (347 total)
- 101.99.0.0/18 (16 384 addresses)
- 42.96.32.0/19 (8 192 addresses)
- 113.20.96.0/19 (8 192 addresses)
- 183.91.0.0/19 (8 192 addresses)
- 203.205.32.0/19 (8 192 addresses)
- 203.171.16.0/20 (4 096 addresses)
- 203.205.16.0/20 (4 096 addresses)
- 45.122.232.0/21 (2 048 addresses)
- 45.122.240.0/21 (2 048 addresses)
- 103.63.104.0/21 (2 048 addresses)
- 103.63.112.0/21 (2 048 addresses)
- 115.165.160.0/21 (2 048 addresses)
- 119.82.136.0/21 (2 048 addresses)
- 202.134.16.0/21 (2 048 addresses)
- 45.122.248.0/22 (1 024 addresses)
- 103.9.196.0/22 (1 024 addresses)
- 103.63.120.0/22 (1 024 addresses)
- 103.108.132.0/22 (1 024 addresses)
- 103.224.168.0/22 (1 024 addresses)
- 103.229.40.0/22 (1 024 addresses)
- 103.246.220.0/22 (1 024 addresses)
- 144.48.24.0/22 (1 024 addresses)
- 203.205.8.0/22 (1 024 addresses)
- 45.122.254.0/23 (512 addresses)
- 119.82.130.0/23 (512 addresses)
- 119.82.134.0/23 (512 addresses)
- 203.205.6.0/23 (512 addresses)
- 45.122.252.0/24 (256 addresses)
- 119.82.129.0/24 (256 addresses)
- 119.82.132.0/24 (256 addresses)
- 124.158.14.0/24 (256 addresses)
- 203.205.0.0/24 (256 addresses)
- 203.205.3.0/24 (256 addresses)
- 203.205.5.0/24 (256 addresses)
- 203.205.12.0/24 (256 addresses)
IPv6 Prefixes (140 total)
- 2402:5300::/34
- 2402:5300:4000::/35